Plot

As the Turtles continue their journey with Usagi and Kintaro to deliver Kintaro to the Temple of the Sky Buddha, Kintaro continues to complain and boast along the way. At one point, Mikey thinks he saw Jei standing on a distant mountaintop, but the others think he was seeing things. Soon, they hear Jei's voice, and are attacked by several cat ninjas who are able to blend into the snow and blizzard thanks to their uniforms. They nearly manage to capture Kintaro for Jei, but Usagi manages to rescue him.

Reaching a point where the temple can be seen in the distance, Usagi tells them to hurry if they are to make it by nightfall. Noticing Kintaro still complaining as he is having his leg bandaged due to injuring it, Usagi asks Leo to stay with Kintaro. Leo uses the chance to teach Kintaro some humility by telling him how courageous he was back on the cliff with the cat ninjas. This surprises Kintaro a bit, but he still tries to boast of himself as they continue on their way.

When they reach the temple, Usagi notices that there should have been guard monks to welcome them and becomes concerned. The Turtles, sensing trouble, also draw their weapons. Soon, they find Jei waiting for them, alongside the brainwashed leader of the temple monks who they had encountered previously, Sumo Kuma. Jei soon reveals that he still had the Turtles under his control as he had seen everything through their eyes, and only now puts them back under his spell while Usagi fights Sumo Kuma. Outnumbered by them, Usagi is soon bested, but as Leo goes to strike the killing blow, Kintaro intercepts it, to Jei's shock, before Kintaro rises into the air and begins to glow as he assumes a meditative state.

Kintaro has unlocked his hidden power, and orders Jei to release the Turtles. When he refuses, Kintaro easily overpowers all of them, even Sumo Kuma, before Jei captures him to perform the ritual to transfer his immortal soul into Kintaro to become unstoppable. However, the Turtles have been snapped back to their senses thanks to Kintaro breaking Jei's spell over them when he overpowered them, and pretend to still be in Jei's servitude, restraining Usagi and making it look as if Leo is to finish him off before Kintaro intervened. However, waiting for the right moment, Leo then flings his katana at Jei, impaling him and interrupting the ritual. Furious, Jei uses Kintaro as a living weapon against the Turtles, but this only serves to infuriate Usagi, who then manages to best Jei, before pulling Leo's katana out of Jei, trapping his soul in the blade, while Jei's body plummets to his death, ending his threat permanently.

With Jei dead for good, Sumo Kuma returns to his senses and apologizes for his actions under Jei's influence, thanking Usagi and the Turtles before offering to take Kintaro under his tutelage in the temple to gain better control of his powers, even telling Kintaro he has the power to provide a means to help the Turtles get home. Using his axe, Kintaro opens a portal to allow the Turtles to return to NYC. As for Usagi, with his mission in escorting Kintaro to Sumo Kuma's temple complete, he takes his leave to find others in need of his services. Kintaro waves goodbye and thanks him for everything, as the Ronin departs to ensure his code of honor to the samurai code of Bushido continues to aid those in need of his service.

Trivia

The title of this episode is parody of a mid '90s Japanese television show Kagayake! Rintaro.

Unlike every episode in the 2012 TMNT series, this episode did not end with the final shot cross fading into a hand drawn, comic book style frame of the final shot.

In an ironic out-of-universe circumstance, this episode shares a parallel theme with the Teen Titans movie and series finale, Trouble in Tokyo. In both shows, Keone Young voices the big bad and manipulator (Jei and Uehara Daizo), and Cary-Hiroyuki Tagawa voices the big bad's powerful but unwilling pawn that is manipulated into being used against the heroes, despite having good intentions (Sumo Kuma and Brushogun); Jei used mind control to force Sumo Kuma, the benevolent leader of the Temple of the Sky Buddha, to attack the samurai hero, Miyamoto Usagi, while Brushogun, a man who just wanted the woman he drew to come to life to love him and accidentally cursed himself with paint-like powers, was shackled to an automatic printing press and forced by Uehara Daizo to produce life-sized killing machines to use against the Teen Titans.